"You just can't get ahead of yourself on this golf course," said the low-key Jackson in his southern dialect.

"I don't see how the guys do it, week in, week out."

No amateur has ever won the US Senior Open.

ABOUT THE U.S. Senior Open

The U.S. Senior Open is one of 13 national
championships conducted by the USGA. Open
to amateurs and professionals who have reached
their 50th birthday as of the first day of the
championship.

The Senior Open was first
played in 1980 with a purse of, get this, just
$100,000. Roberto Vincenzo of Argentina was the
inaugural champion (winning $20,000), and Arnold
Palmer was a popular winner the following year in
1981 at Oakland Hills. The purse has since grown to
almost $4 million with the winner taking $675,000.